tiff processing hung on `Creating JSON file for slide info`

[matt-sd-watson]

When processing a large (1.4GB) ome.tiff using the following command:

ImmunoViewerWatch /home/matt/tissuemap_test/import/ /home/matt/export/

The output trace never progresses beyond Creating JSON file for slide info

Tail of the trace:

vips dzsave /home/matt/tissuemap_test/export/test_1.ome/channel_33.tiff /home/matt/tissuemap_test/export/test_1.ome/channel_33 --suffix .tiff
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libvips.so.42)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libopenslide.so.0)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libpoppler.so.118)
Converting channel 34 to DZI
vips dzsave /home/matt/tissuemap_test/export/test_1.ome/channel_34.tiff /home/matt/tissuemap_test/export/test_1.ome/channel_34 --suffix .tiff
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libvips.so.42)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libopenslide.so.0)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libpoppler.so.118)
Converting channel 35 to DZI
vips dzsave /home/matt/tissuemap_test/export/test_1.ome/channel_35.tiff /home/matt/tissuemap_test/export/test_1.ome/channel_35 --suffix .tiff
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libvips.so.42)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libopenslide.so.0)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libpoppler.so.118)
Converting channel 36 to DZI
vips dzsave /home/matt/tissuemap_test/export/test_1.ome/channel_36.tiff /home/matt/tissuemap_test/export/test_1.ome/channel_36 --suffix .tiff
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libvips.so.42)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libopenslide.so.0)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libpoppler.so.118)
Converting channel 37 to DZI
vips dzsave /home/matt/tissuemap_test/export/test_1.ome/channel_37.tiff /home/matt/tissuemap_test/export/test_1.ome/channel_37 --suffix .tiff
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libvips.so.42)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libopenslide.so.0)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libpoppler.so.118)
Converting channel 38 to DZI
vips dzsave /home/matt/tissuemap_test/export/test_1.ome/channel_38.tiff /home/matt/tissuemap_test/export/test_1.ome/channel_38 --suffix .tiff
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libvips.so.42)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libopenslide.so.0)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libpoppler.so.118)
Converting channel 39 to DZI
vips dzsave /home/matt/tissuemap_test/export/test_1.ome/channel_39.tiff /home/matt/tissuemap_test/export/test_1.ome/channel_39 --suffix .tiff
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libvips.so.42)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libopenslide.so.0)
vips: /usr/local/lib/libtiff.so.5: no version information available (required by /lib/x86_64-linux-gnu/libpoppler.so.118)
Creating JSON file for slide info